Question

find the smallest number that is exactly divisible by 12 , 15 and 20
I mark as brainlist and follow that answer correct​

Answer 1

Answer:

60

Step-by-step explanation:

12 = 2 x 2 x 3

15 = 3 x 5

20 = 2 x 2 x 5

We first find the LCM of 12 and 15. Take each factor. Find the number in which it is repeated the most times and put that in the LCM.

For 2, it is repeated twice in 12. 3 is repeated once in 12 and 15 so we just put 3, and 5 for 12. The LCM of 12 and 15 is 2 x 2 x 3 x 5, or 60.

The LCM of 60 and 20 is just 60.

The answer is 60.